Cemented molded frame constructions



March 4, '19'58 P. L. MATER CEMENTED MOLDED FRAME CONSTRUCTIONS Original Filed Feb. 1, 1954 FIGS 38 24 IIHI I I 1*? wh OWE, 54 o o INVENTOR Ere L, 4447-5? mfag,

ATTORNEY United States Patent a 2,825,082 CEMENTED MOLDED V'FRAME ,CONSTRUCTIONS Peter. L. .Mater, Leomin'ster, Mass., assignor to Standard Pyroxoloid Corporation, Leoniinster, Mass;, a corporation offMassachusetts Original applicationFebruary 1, 1954, Serial No. 407,537, now Patent No. 2,761,355, dated September 4, 1956. and this application July 25, 1956, Serial No.

2 Claims. (Cl. -193 The principal object of the invention resides inthe provision of a continuous frame which is adapted to hold amirror'ya brush-back or a spectacle lens or the like, in combination 'witli a separate holding element which is cemented to the continuous frame along a plurality of relatively narrow ring-like surfaces at angles to each other, therebeing at least two of such relatively angular ly-disposed surfaces and preferably threethereof; in combination with an extra flange or ringor the like which is substantially "concentric with "the cemented surfaces referred to abov e,;;orparallel thereto in the case of rectangular deyices, said extra flange being disposedtocontacha member in said frame-and hold the samejngfixed position thereinz Further objects of the invention include the provision of frames for holding devices as above described wherein all rolling over or distortion of the material of the frame is avoided, improving the appearance of the finished item and reducing the cost of construction therefor; and providing a construction which is ideal for cementing operations as opposed to any clamping, rolling over or squeezing operations as used in the prior art.

Further objects of the invention include the provision of a dam or the like on a pad to contain the adhesive material for securing the bristles in a brush-back, preventing such adhesive from coming in contact with the portion of the device that is made for the cementing operations and thereby preventing edge distortion of the brush-back securement areas, such distortion being common in the prior art and preventing satisfactory cementing operations and resulting in poor appearance.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Fig. l is a plan view of a brush made according to the present invention;

Fig. 2 is an enlarged section on line 22 thereof;

Fig. 3 is a still further enlarged sectional view illustrating the construction;

Fig. 4 is a plan view of a brush-back blank prior to bristling; I

Fig. 5 is an enlarged section on line 5-5 of Fig. 4;

Fig. 6 is a section through a form of the invention used for holding mirrors; and

Fig. 7 is a plan view of the construction, looking in the direction of arrow 7 in Fig. 6, parts being broken away.

In the prior art it has been common to either directly cement a plain bristled brush-back into a frame or to insert the bristled back into the frame and then to heat and roll over the edges of the frame to hold the same ice . 2 thereto. The present invention is concerned only with cementing and presents a new construction which improves the cemented article, enhances the appearance thereof, and reduces the cost of manufacturing at the sametime.

Referring to Fig. 1, there is illustrated a brush having a handle 10 which may be, molded integrally with a continuous frame 12. This frame receives the brush-back 14 which is cemented thereto as will be described below, reference numeral 16 indicating the bristles.

Referring now to Figs. 4 and 5, the brush-back 14 com; prises a web provided with a series of apertures 18, and the bristles are shaken into these apertures and positioned therein in a manner well known in the art. When enough bristles are so positioned, they are cemented in place to the brush-back 14 by means of a relatively large volume of cementitious material 20. It is to be noted that in Fig. 5 the brush-back 14 in inverted, and it receives the bristle securing material in this position.

The new and improved construction includes a continuous ring or flange-22 that rises from the flat bristle holding web portion of the brush-back 14 as clearly seen in Figs.- 2, 3 and 5. This flange acts as a darn, the cementitious material-T20, when fluid, being cast into the brush-back 14 inverted as shown in Fig. 5. The heat from thefluid cementitious material is largely contained within the area defined by the flange 22. g j 3 A circumferential flange or ring 24 extends outwardly from the flange 22 adjacent the flat bristle-holding web portion'of-the holder; and this flange or ring is protected fromtheheat-of thehot cementitiousmaterial by reason ofthepresenceof the dam 22, so that the flange 24 cannot becomedistorted by reason of such heat. The flange 24 i p oy ed w h 2 ver ca yt n s o te r d ring. 1 xfla aazl i-;cpas ntric: w th. fla e .andirr t ably shorter. The flange or ring 26 is provided with a flat terminal surface 28, a cylindrical surface 30 at right angles to surface 28, and a flat surface 32 at right angles to surface 30 but parallel to surface 28. This construction forms three separate surfaces in the form of two treads and a riser, all of which surfaces are well spaced from the flange 22, and these three surfaces are to be cemented to the frame 12 as will be described.

The frame 12 is provided with a ring or flange 34 which has three surfaces corresponding to those at 28, 30 and 32 as best shown in Fig. 3 and these surfaces are indicated at 36, 38 and 40. These surfaces also form two treads and a riser complementary to those at 28, 30 and 32.

When the brush is to be assembled, an ornamental piece 42 is first inserted and laid upon an inwardly directed holding flange or shoulder 44 formed on the frame 12. It is of course possible that the portion 42 and the frame 12 may be integral. A backing member which may be of any suitable material such as corrugated board 46 is then laid upon the member 42. The brush-back as described above is now inverted from its Fig. 5 position and laid over upon the frame as shown in Fig. 3.

The surfaces at 28 and 30 are applied with cement just prior to the assembly of the brush-back, and the excess cement which may be squeezed out between the members and upon the application of pressure between the brush-back and frame 12 will form an adhesive means between the surfaces 32 and, 36, so that all three of the surfaces will be seen to be cemented together and this forms a relatively wide surface 30 and a pair of smaller or narrower cemented surfaces at right angles thereto and at each side thereof for a perfect cementing relationship between the parts. Of course, cement may be directly applied to surface 28 also.

.Preferably the brush-back is provided with a rounded e ge portion at 48 and this will then appear to be a continuation of the material of the frame "12,10 -that-an-extremely neat as well as tighttand permanent joint is thus provided, the parts being undistorted and fitting well.

Where -a mirror or a spectacle lens is to be held in the framepthe construction is -very similar. This-construction is shown in Figs G-and 7-wherein-the continuous frame M50 is an open frame provided-with a hdlding shoulder 52 to receive the glass of a mirror or -bakin'g therefor-or a spectacle lens. Frame 80 is provided-with the two-tread and riser eonst-ructiomthe same as above described, see the reference numeral 54, and the continuous'holding frame "56 is provided with 'the mating complementary "surfaces 1 as 1 clearly shown in Fig. 7, {together with a spaced holding flange 58. "Holdingflange 58 iscomparable to that-of 2 2. It is-spacedflfrom the cement-receivingflange 60 and -it abuts the membe to be held. The flange 60 is "made to *providethe cementing construction as above describedasyto Figs. 2, 3 and '5, see the three separate surfaces as' be'for'e, so that a- 'perfeet-cemented construction is provided.

his to be -understood 'tha't in rnost teases the frame 1 and handle an of molded plastic and "the holding member is also mdlded' for a snug fit es -shown in the-disclosure, sothat the-entiredesign is of an inexpensive manufacture but hasawery greatly improved-appearance over similar devices of the-prior art, and this improved appearance is due to the construction forming the invention in 'the present case.

Having thus described my invention and the advantages thereof, I do not wish to be 'limitedto the detailsherc'in disclosed, other-wise than as set forth in the claimgbut whatFL-elaim is:

1. Aframe-eonstructioncomprisingacontinuous-frame generally parallel -spaced flanges om the holding-element,

one flange being outwardly tlocated relative to the, other and abutting said step at one surface and said riser at an adjacent side surface thereof, said flange surfaces and the step and riser beingcemented, and the other flange having -a free end. surface contacting the member --in the frame noncementitious'ly and "holding the member thereto, brush .bristles .on andsextending ioutwardlyi from .the holding element, lcementitious material-in Rise-latter .and defined and held by the inner flangethereonysaid "flanges extending ,in one direction toward the frame and the bristles ex ending .in ;.'the=topposite ;direction away from thegframe.

2. A frame construction comprising a web portion, a flange upstanding thereon at the edges thereof, bristles extending through the web portion "and 'at least partially into the area defined by the flange, cementitious material on the wbportionlholding the bristles'at one side'of thesame and definedand -'constraine'd by the flangega s'ec- 0nd flange on-the web-portion located outwardly-of the first-named flange in :space'd 'relation thereto, said second flangeihaving a p'airof narrow striplike surfaces at angles to each ather," a iframe, a stepped surface on the frame-dt the edges thereof andcomplementary to' the marrow surfaces on the :secondmamed I flange, it hte stepped surface of 'rheirame-being aemenfie'dto the-marrow surfaces of the secmidmamed flange, :a-shird narrow strip-'like su'rfaeeon the web portiom-saidthirdmutfacbbeing "outwardly located relative to the seconfi-namedfiflange but immediate- 1y adjacent thereto, and a-third complementary surface similar thereto, on theffrsme, third surface being cemented thereto. 

